Abstract: A positioning and retaining element has a cylindrical rotary belt of substantially constant thickness, having an inner diameter substantially equal to the outer diameter of the stator to be capable of being mounted substantially coaxial clamped about the stator. The positioning and retaining element also has a number of support members projecting radially from the belt outwards and having each a support surface on the housing of the compressor, the support surfaces being located on the lateral surface of a fictitious rotary cylinder of same axis as the other belt and of diameter substantially equal to the inner diameter of the housing, such that the positioning and retaining element can be mounted clamped inside the housing.

Abstract: In order to make a displacement type compressor be able to reliably start without increasing an outside diameter dimension of the compressor while using a self-start synchronous motor having high energy efficiency, the displacement type compressor according to the invention includes the self-start synchronous motor which starts as an induction-motor and performs synchronous operation by performing synchronization pull-in almost at a synchronous rotational frequency, a compression part having a compression chamber which compresses a working fluid, and a hermetic container which houses the self-start synchronous motor and the compression part. The displacement type compressor is provided with a start load reducing means which reduces a load of the compression part at startup and is placed at the compression part in the hermetic container.

Abstract: Embodiments of the invention provide a pump assembly including a pump, a motor, and a baseplate. The pump includes a valve housing and an upper housing with a ring to separate an inlet chamber from an outlet chamber. An o-ring is positioned between raised outer walls of the ring and secured by a cutout of the valve housing. The motor includes a brush ring assembly with brush holders and torsion springs urging brushes through the brush holders. The baseplate includes a cutout capable of allowing the use of a clamp or a wrap to couple the baseplate to the motor.

Abstract: In the hermetically sealed scroll compressor, an injection pipe for injecting a fluid to a compression chamber is connected to an injecting port of a fixed scroll. The injecting port includes a first injecting port which is provided in the vicinity of a fixed scroll inner curve and injects the fluid to an orbiting outer compression chamber, and a second injecting port 22b which is provided in the vicinity of a fixed scroll outer curve and injects the fluid to a orbiting inner compression chamber 8b. The second injecting port is placed in parallel in a radius direction with respect to the first injecting port and is placed so that an orbiting scroll wrap does not practically communicate with the orbiting outer compression chamber in the state in which the orbiting scroll wrap is in contact with the outer side of a fixed scroll wrap.

Abstract: A capacity varying device for a scroll compressor may include a fixed scroll and an orbiting scroll both located in a casing, a low pressure passage formed by an orbiting motion of the orbiting scroll that communicates with a suction side, an intermediate pressure passage formed by the orbiting motion of the orbiting scroll that communicates with an intermediate pressure side, a rotating device rotatably coupled to the fixed scroll and having a connection passage therein, and an operating device mounted at the fixed scroll and configured to rotate the rotating device such that the low pressure passage and the intermediate pressure passage are connected to each other or disconnected from each other via the connection passage of the rotating device. Accordingly, a capacity for compressing gas may be varied, a size of the device may be reduced due to a compact configuration and structure for varying the capacity, and also a fast response to the varying of the capacity may be provided.

Abstract: An expander-compressor unit (200) includes a closed casing (1), a compression mechanism (2), an expansion mechanism (3), a shaft (5), and an oil pump (6). The shaft (5) includes an upper shaft (5s) provided with an upper eccentric portion (5a) for the compression mechanism (2), and a lower shaft (5t) provided with lower eccentric portions (5d and 5c) for the expansion mechanism (3) and an intermediate eccentric portion (5e) for the oil pump (6). The expansion mechanism (3) has an upper bearing member (45) for supporting a supported portion (5f) of the lower shaft (5t) located immediately above the lower eccentric portion (5d). The intermediate eccentric portion (5e) has a diameter equal to or less than that of the supported portion (5f).

Abstract: An inverter-device built-in type electric compressor includes a compressor terminal and a direct-mounting connector, which connects the inverter-device to an external circuit, at an electric compressor side. The direct-mounting connector faces toward the electric compressor and is placed in parallel with a center axis of the electric compressor. A harness connector wired from a motor of the electric compressor is detachably and electrically connected to the compressor terminal, and the electric compressor is detachably and mechanically connected to the inverter-device.

Abstract: A multistage compressor is provided, which can reduce an oil circulation ratio by reducing the amount of lubricating oil to be taken in by a high-stage compression mechanism to improve the system efficiency and prevent a shortage of lubricating oil. A low-stage compression mechanism and a high-stage compression mechanism are disposed below and above to flank an electric motor, respectively, intermediate-pressure refrigerant gas compressed by the low-stage compression mechanism is discharged into a sealed housing, and the intermediate-pressure refrigerant gas is taken in by the high-stage compression mechanism so as to be compressed in two stages, an oil separator plate that centrifugally separates lubricating oil contained in the intermediate-pressure refrigerant gas, which is taken in by the high-stage compression mechanism after passing through the electric motor, is provided at one end of a rotor of the electric motor such that a rotary shaft extends through the oil separator plate.

Abstract: An expander-compressor unit (200A) includes a closed casing (1), a compression mechanism (2), an expansion mechanism (3), a shaft (5), and an oil pump (6). The shaft (5) couples the compression mechanism (2) to the expansion mechanism (3) so that power recovered by the expansion mechanism (3) is transferred to the compression mechanism (2). The oil pump (6) is disposed between the compression mechanism (2) and the expansion mechanism (3), and supplies an oil held in an oil reservoir (25) to the compression mechanism (2). An oil supply passage (29) is formed in the shaft (5) so that the oil discharged from the oil pump (6) can be supplied to the compression mechanism (2). A lower end (29e) of the oil supply passage (29) is located below an inlet (29p) of the oil supply passage (29) formed in an outer circumferential surface of the shaft (5).

Abstract: An expander-integrated compressor 200A includes a closed casing 1, a compression mechanism 2, an expansion mechanism 3, a shaft 5, an oil pump 6, and a heat insulating structure 30A. The oil pump 6 is disposed between the compression mechanism 1 and the expansion mechanism 3, and draws, via an oil suction port 62q, an oil held in an oil reservoir 25 to supply it to the compression mechanism 2. The heat insulating structure 30A is disposed between the oil pump 6 and the expansion mechanism 3, and limits a flow of the oil between an upper tank 25a, in which the oil suction port 62q is located, and a lower tank 25b, in which the expansion mechanism 3 is located, so as to suppress heat transfer from the oil filling the upper tank 25a to the oil filling the lower tank 25b.

Abstract: A mode changing apparatus for a scroll compressor is provided that may include a low-pressure passage that communicates with a suction side formed by an orbiting motion of an orbiting scroll, an intermediate-pressure passage that communicates with an intermediate-pressure side formed by the orbiting motion of the orbiting scroll, a block assembly mounted at the fixed scroll and having a connection channel that connects the low-pressure passage and the intermediate-pressure passage, a switching device disposed at the block assembly that opens/closes the connection channel, and a pressure supply device that selectively applies, to the block assembly, a discharge gas pressure discharged from the fixed and orbiting scrolls and a suction gas pressure sucked into the fixed and orbiting scrolls, to thereby operate the switching device. With such a simplified structure, the gas compression capacity of a scroll compressor may be varied, enhancing energy efficiency of a system.

Abstract: A motor-driven compressor has a compression mechanism, a rotary shaft, an electric motor, a motor drive circuit, a connecting terminal and a housing assembly. The compression mechanism, the electric motor, and the motor drive circuit are disposed along the axial direction of the rotary shaft in the housing assembly having first through third housings. The first housing is used for mounting the electric motor and the compression mechanism. The second housing has a terminal mounting portion for fixing the connecting terminal. The first and second housings have fastening portions at the radially peripheral portion thereof. The third housing is joined to the second housing to form an accommodation space for accommodating the motor drive circuit. The closed casing is formed by fastening the fastening portions of the first and second housings by means of a first bolt and connecting the second housing to the open end of the first housing.

Abstract: A motor-driven compressor has a compression mechanism, a rotary shaft, an electric motor, a motor drive circuit and a housing assembly. The compression mechanism, the electric motor and the motor drive circuit are disposed along the axial direction of the rotary shaft in the housing assembly. The housing assembly has first and second housings. The first housing mounts the electric motor and the compression mechanism. The first housing has first and second mounting lugs formed integrally with the peripheral surface of the first housing. The second housing is joined to the first housing for accommodating the motor drive circuit. The second housing has a third mounting lug formed integrally with the second housing. The first through third mounting lugs are fastened to a mounting object to which the motor-driven compressor is to be mounted by means of fastening members.

Abstract: A motor-driven compressor includes a compression mechanism for compressing a refrigerant gas, an electric motor, an inverter assembly and an inverter chamber. The electric motor drives the compression mechanism. The inverter assembly converts direct-current power into polyphase alternating-current power to supply to the electric motor and controls a rotational speed of the electric motor. A substrate having an electric circuit and an electronic component connected to the substrate are provided in the inverter assembly. The inverter chamber detachably accommodates the inverter assembly. A vibration damping member is arranged in the inverter assembly.

Abstract: A scroll compressor as a fluid machine includes a housing containing a scroll unit and an armature of an electric motor, and a connection device (66) for electrically connecting each stator coil (62) of the armature to a circuit board external to the housing. The connection device (66) includes a tubular lead holder (70) extending from inside the housing and gastightly passed through a through hole (68) to outside of a housing wall (16), the lead holder (70) having a head (72) and snap anchors (74) holding the housing wall (16) therebetween, and a wire-shaped lead (76) extending from the stator coil (62) and gastightly passed through the lead holder (70) to outside of the housing wall (16).

Abstract: A scroll compressor is provided with an oil return tube having an outlet for directing oil toward a motor protector for an electric motor. The oil supply tube is positioned to be at an angle relative to the drive axis of a shaft driven by the electric motor. This ensures that the outlet of the oil supply tube can be properly positioned relative to the electric motor. Under normal conditions, an adequate flow of refrigerant will pull the oil from the oil supply tube and away from the motor protector. However, should there be an inadequate flow of refrigerant within the sealed compressor, the oil will contact the motor protector, which in turn may stop operation of the electric motor.

Abstract: A compressor includes a shell, a compression mechanism, a motor, a base member, and a mounting foot. The compression mechanism is disposed within the shell and the motor is drivingly engaged with the compression mechanism. The base member is coupled to the shell and a mounting foot is fixed to the base member. The mounting foot includes a mounting aperture extending therethrough and a slot intersecting the aperture that attenuates vibrations within an operating frequency range of the compressor.

Abstract: A power driven compressor that can prevent its control circuit from overheating includes: a housing whose interior accommodates a transmission assembly and a compressor assembly and has an air inlet and a coolant outlet; a control circuit accommodating box which is disposed on the housing and has a coolant inlet and an air outlet; a connecting pipe whose one end connects to the air outlet of the control circuit accommodating box and whose other end connects to the air inlet of the housing. When the transmission assembly is driven by electrical power, the coolant enters the control circuit accommodating box via the coolant inlet thereof. It then goes through the air outlet, the connecting pipe, and the housing air inlet into the housing for compression. The compressed coolant goes out via the coolant outlet of the housing.

Abstract: A power driven compressor system for vehicle includes: a housing, formed with a driving circuit accommodating room; a transmission set disposed in the housing and driven by electrical power to produce a rotating magnetic for rotating a transmission axle; a scroll set comprised of a static scroll and a orbiting scroll. The orbiting scroll is driven by the transmission axle to rotate eccentrically with respect to the static scroll. An Oldham ring is disposed between the orbiting scroll and the housing. The Oldham ring has a cross-like limiting part. A concave part corresponding to the limiting part is formed on the housing and the orbiting scroll to limit the motion of the orbiting scroll.

Abstract: A scroll compressor for compressing fluid has a common terminal block for electrical hook-ups. The compressor includes a compressor section; a drive unit operative to drive the compressor section for compressing fluid; a protection module; and a power connector for connecting electrical power to the drive unit to facilitate operation of the scroll compressor bodies. The common terminal block provides for connection to the protection module and the power connector for the compressor.

Abstract: An object is to achieve a compact design by using a dead space in an inverter box effectively, to improve cooling properties of heat-generating electrical components disposed on a control circuit board of an inverter, and to increase flexibility of wiring layout. In an inverter box provided at a periphery of a housing, a heat-dissipating flat portion that is parallel to a control circuit board of an inverter is formed, and electrical components are disposed in a space between the heat-dissipating flat portion and the control circuit board. Preferably, the electrical components are installed so that the back faces thereof abut against the heat-dissipating flat portion either directly or via a heat-conducting member. More preferably, faces of the electrical components on the board side abut against the control circuit board.

Abstract: A sealed compressor includes a cylindrical shell extending along an axis. A compressor pump unit is mounted within a housing defined by the cylindrical shell. An electric motor has an inner rotor and an outer stator. The stator has an outer peripheral surface of a first dimension. The center shell has a nominal inner diameter, greater than the first dimension of the stator. The rotor drives a driveshaft about the axis. The driveshaft is associated with the compressor pump unit. A suction port extends through the center shell to deliver a suction fluid to be compressed by the compressor pump unit. Some of the suction fluid flows into a gap defined between the nominal inner diameter of the center shell and the outer periphery of the stator. The center shell has portions deformed radially inwardly to contact the outer periphery of the stator.

Abstract: A sealed compressor includes a housing for receiving a compressor pump unit and an electric motor. The electric motor drives a driveshaft. The driveshaft extends to drive an element within the compressor pump unit to compress a fluid. The motor includes a rotor spaced from a portion of the housing by a gap. The driveshaft drives a counterweight, which has a radially outermost portion extending radially outwardly beyond a radially innermost portion of the stator. The radially outermost portion of the counterweight has an angled face to drive fluid into the gap.

Abstract: To provide a motor-directly connected compressor unit which is equipped with a cooling means for suppressing the heating of the compressor and is easy to transfer without upsizing the compressor unit in size or weight, the compressor unit is configured such that a sirocco fan 30 is arranged between a scroll compressor 20 and a drive motor 60 located under the sirocco fan 30; an output shaft 62 of the drive motor 60, a drive shaft 33 of the sirocco fan 30 and a rotation shaft 28 of the scroll compressor 20 are linearly connected in the same straight line; a housing 32 of the sirocco fan 30 is fixed on a mount 50 which is supported on legs 54 via anti-vibration rubber pads 52; a cooling jacket is arranged to cover a top of a housing 21 of the scroll compressor 20; and an air outlet 31 arranged in the housing 32 of the sirocco fan 30 is in communication with a cooling jacket 40 via a duct 44 so as to feed air a from the sirocco fan 30 to the cooling jacket 40, thereby cooling the scroll compressor.

Abstract: A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses a refrigerant in the compression mechanism portion. A used refrigerant is a halogenated hydrocarbon or a hydrocarbon having a carbon double bond in the composition or is a mixture containing one of the same. A sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in a sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed.

Abstract: In order to make a displacement type compressor be able to reliably start without increasing an outside diameter dimension of the compressor while using a self-start synchronous motor having high energy efficiency, the displacement type compressor according to the invention includes the self-start synchronous motor which starts as an induction-motor and performs synchronous operation by performing synchronization pull-in almost at a synchronous rotational frequency, a compression part having a compression chamber which compresses a working fluid, and a hermetic container which houses the self-start synchronous motor and the compression part. The displacement type compressor is provided with a start load reducing means which reduces a load of the compression part at startup and is placed at the compression part in the hermetic container.

Abstract: Compressors are defined by two relatively moving members, which have a relative orbital movement between the two. Piezoelectric elements are associated with each of the two moving members to cause the moving members to result in the orbital movement.

Abstract: A scroll back pressure chamber in a scroll compressor is composed of a space 111 filled with suction pressure (or intermediate pressure) and a space filled with discharge pressure, and the summation of the suction pressure (or the intermediate pressure) and the discharge pressure presses one of scrolls against the other of the scrolls. An injection hole, through which refrigerant in gas state or refrigerant in liquid state is injected into a compression chamber of the scroll compressor, is provided on a fixed scroll, and the gas refrigerant injection or the liquid refrigerant injection is selected and carried out according to an operating pressure ratio.

Abstract: A feed unit has a surge chamber 1, a fuel pump 2, which is arranged in the surge chamber 1, and a pump holder 3, the fuel pump 2 being arranged in the pump holder 3 and the pump holder 3 being fastened in the surge chamber 1. The pump holder 3 has at least two rods 6 which are fastened in the surge chamber 1, the rods 6 being connected to a mount 5 for the fuel pump 2.

Abstract: A scroll fluid machine comprises a housing, two fixed scrolls each of which is fixed on each side of the housing, an endless transmitting member connected to an electric motor, a driven pulley wound by the transmitting member, a thrust-offsetting shaft rotatably mounted at a position eccentric from a axis in the driven pulley, two orbiting scrolls each of which is fixed at each end of the thrust-offsetting shaft which rotates to form a compression chamber with the fixed scroll, and a self-rotation preventing device disposed between the housing and the orbiting scroll.

Abstract: In an inverter control apparatus in which a control circuit board is fixed by use of pin-like terminals provided in a power board, the breakage of the pin-like terminals is prevented. The power board 160 is provided with a plurality of signal transmission terminals 210a, 210b, 220a, 220b for signal transmission to and from the control circuit board 150 and for grounding along each of a pair of opposed sides, the control circuit board 150 is electrically connected to the plurality of signal transmission terminals 210a etc. and is fixed by soldering to the plurality of signal transmission terminals 210a etc., and the plurality of signal transmission terminals 210a etc. are arranged along each of the pair of sides in a plurality of rows.

Abstract: Provided is a vehicle electric compressor in which damage, such as damage to the function of an inverter unit or a high-voltage cable, is less likely to occur even when an external force is applied. A vehicle electric compressor (10) in which a compressing mechanism for compressing and discharging intake fluid and an electric motor for driving the compressing mechanism are accommodated in a housing (11), and an inverter unit (14) for rotational control of an electric motor is disposed on the outside of the housing (11), wherein a cover member (20) for protecting the inverter unit (14) from an external force is provided on the outside of the inverter unit (14).

Abstract: A compressor may include a shell, a compression mechanism supported within the shell, a motor drivingly engaged with the compression mechanism, and a terminal assembly. The terminal assembly may include a cover secured relative to the shell, a terminal block fixed to the shell and in electrical communication with the motor, and a plug. The plug may be engaged with the terminal block and may provide electrical communication between the terminal block and a wire. The plug may include a first side facing the terminal block and a second side facing a wall of the cover. The second side may include a protrusion extending toward the wall and spaced a distance therefrom.

Abstract: An electric compressor provided with an integral inverter, incorporated with a motor and provided in a receiving space surrounded by a compressor housing with a motor drive circuit that includes the inverter. At least some of electric parts including the motor drive circuit are covered by a resin charged into the receiving space, and a part of a region which is in the receiving space and into which the resin can be charged is filled with a light-weight material different from the charged resin. In the structure of the resin covering section for such a motor drive circuit, the amount of resin charged is significantly reduced, and the entire compressor is reduced in weight and cost.

Abstract: The present invention provides a compressor having casings fixed together in a manner allowing the compressor to have a reduced sized as well as reusability. The compressor according to the present invention comprises a plurality of casings (1a, 1b) each having an open end designed to be brought into butt contact, the casings being arranged with the open ends in butt contact with each other, thereby constituting a pressure vessel enclosing a compressing unit; a flange-like projection (3) formed on the outer circumference of the open end of each of the casings, the projections of the casings butted together forming a pair; and a plurality of fixing members (4a to 4c) each in a shape corresponding to a section which would be obtained by dividing the open end of the casing, and having a groove inside, the groove being designed to engage with the paired projections butted together.

Abstract: In a revolution type compressor using a balance weight for balancing a rotating mass, the effect of oil churn reduction is enhanced, and compressor input is reduced. A balance weight fixed to a drive shaft between a rotor of an electric motor 4 and a compression mechanism includes a weight portion in a substantially semicircular column shape for balancing a rotating mass, a cover portion which is substantially semi-cylindrical and has an opening in the vicinity of a top and bottom at an opposite side in a radial direction from the weight portion, and a hollow space surrounded by the weight portion and the cover portion. Further, a space for discharging oil is provided between the balance weight and the rotor. By the structure, reduction in oil churn, and reduction in input of the compressor are realized, and the compressor with less power consumption is obtained.

Abstract: An electric compressor provided with an integral inverter, incorporated with a motor and provided in a compressor housing with a motor drive circuit that includes the inverter. At least some of electric parts including the motor drive circuit are coated at an assembly-completed state with a resin material at a predetermined thickness by, for example, pouring of a liquid resin and draining of excess resin. In the electric compressor, a resin coating structure of the motor drive circuit is simplified, is easily coated with resin, is reduced in weight by reducing the amount of resin, and is reduced in cost.

Abstract: An electric compressor provided with an integral inverter, incorporated with a motor and provided in a receiving space surrounded by a compressor housing with a motor drive circuit that includes the inverter. At least some of electric parts including the motor drive circuit are coated at an assembly-completed state with a resin that is charged into the receiving space. The shape of the charged resin is defined in the receiving space by a jig used at the time of resin charging and defining a space to be charged with the resin. In the structure of a resin coating section for such a motor drive circuit, the amount of resin charged is significantly reduced, and the entire compressor is reduced in weight and cost.

Abstract: In the hermetically sealed scroll compressor, an injection pipe for injecting a fluid to a compression chamber is connected to an injecting port of a fixed scroll. The injecting port includes a first injecting port which is provided in the vicinity of a fixed scroll inner curve and injects the fluid to an orbiting outer compression chamber, and a second injecting port 22b which is provided in the vicinity of a fixed scroll outer curve and injects the fluid to a orbiting inner compression chamber 8b. The second injecting port is placed in parallel in a radius direction with respect to the first injecting port and is placed so that an orbiting scroll wrap does not practically communicate with the orbiting outer compression chamber in the state in which the orbiting scroll wrap is in contact with the outer side of a fixed scroll wrap.

Abstract: A scroll-type refrigerant compressor with a sealed enclosure defined by a shell and containing a suction volume and a compression volume at opposite ends of the enclosure. The shell has a gas inlet, an electric motor on the suction side having a stator and defining with the shell an annular volume. The stator is surrounded by a jacket defining an annular volume with the shell and a chamber which contains the motor winding and is directed towards the compression volume, an end of the intermediate jacket directed away from the compression volume being located at an end of the stator directed away from the compression volume. Structure is provided for conveying some of the gas arriving at the gas inlet into the chamber containing the motor winding, and gas conveyed by the structure is admitted into the chamber containing the winding through the gas intake orifice.

Abstract: A lead wire of a motor is prevented from being damaged, and the reliability of an electric compressor is enhanced. The electric compressor 1 is provided with a division wall 80b which divides a discharge chamber 62 and a connection space 65 which connects a sealed terminal 90 and a lead wire 5c of a motor 5. With this configuration, it is possible to prevent discharge gas from directly flowing into the connection space 65, and to prevent the discharge gas from flowing into a wire passage 64 through which the lead wire 5c is passed. Therefore, vibration of lead wire 5c caused by gas pulse can be suppressed, the lead wire can be prevented from being damaged, and the reliability of the electric compressor can be enhanced.

Abstract: A compressor comprising a sealed chamber delimited laterally by a shell, a drive shaft housed in the shell and guided relative to the other parts of the compressor via at least one bearing provided in a bearing support fixed to the internal wall of the shell. The method comprises steps consisting in supplying a shell have, in the fixing plane of the bearing support, an oval section comprising a small axis to which the bearing support is intended to be mounted, exerting a pressure on the shell in order to elastically deform it so as to increase the length of its small axis, inserting and positioning the bearing support in the fixing plane of the latter, and ceasing to exert a pressure on the shell so that the latter tends to elastically return to its original form and grip the bearing support.

Abstract: In a scroll-type fluid machine (4), a refrigerant in a discharge chamber (80) is adjusted at prescribed discharge pressure by using a discharge valve (84), discharged from a scroll unit (52), and supplied to a refrigeration circuit (2), and the machine has a circulation path (7) for introducing the refrigerant in the discharge chamber from the refrigeration circuit toward a drive casing (22) while maintaining the refrigerant pressure, and an inlet path (93) formed in a compression casing (24) and leads the refrigerant in the circulation path to the rear side of a movable scroll (54) to make the led refrigerant counteract the refrigerant discharge pressure acting on the front side of the movable scroll.

Abstract: An electric compressor for a vehicle air conditioner capable of preventing refrigerant leakage is provided. A case (77) is formed by injecting a molten metal into a mold, and a compression unit for compressing a refrigerant is accommodated inside, wherein a machined portion (123) is formed on one of an inner circumferential surface (77A) in contact with the refrigerant and an outer circumferential surface adjacent to the inner circumferential surface.

Abstract: A compressor assembly includes a shell, a compressor housed within the shell, and a motor drivingly connected to the compressor. A printed circuit board supports at least one temperature sensor. Processing circuitry receives data from the printed circuit board to determine operating conditions of the compressor.

Abstract: A scroll type compressor is disclosed. The scroll type compressor includes a housing, a frame, a compartment, a separator, a scroll pairs, a slider, a plurality of compartments, at least a pressure-regulating mechanism, and a guiding element. The compartment in the housing is separated into a high-pressure compartment, a low-pressure compartment, and a middle-pressure compartment. The separator is disposed between the high-pressure compartment and the low-pressure compartment. The separator includes an outlet at the center thereof, and at least a passage through the separator. When the pressure in the high-pressure compartment is less than that in low-pressure compartment, the pressure-regulating mechanism is opened to exhaust pressure from the middle-pressure compartment to the high-pressure compartment.

Abstract: An electric compressor having a built-in electric motor for driving the compressor and in which a connection section between an external terminal for power supply to the electric motor and the end of a wire from a stator of the electric motor is stored in a compressor housing. The electric compressor is characterized in that the connection section is constructed from a housing side coupler engaged with the compressor housing, a power supply-external terminal side coupler engaged with the housing side coupler, and a stator side coupler for holding the end of the wire from the stator, fitted to the power supply-external terminal side coupler, and engaged with the housing side coupler. In this electric compressor, vibration resistance of a terminal connection section for the motor is improved and breakage and momentary electrical interruption at the terminal connection section can be prevented, with productivity of the compressor maintained at a good level.

Abstract: A hermetic compressor includes a casing, a compression mechanism in the casing, a container member and a pressure reduction device. The casing includes a high pressure chamber, an intake pipe and a discharge pipe. The high pressure chamber contains lubricant oil that is supplied to the compression mechanism. The container member is a separate body from and communicates with a bottom part of the high pressure chamber so as to allow the lubricant oil to flow to and from the container member. The pressure reduction device sucks gas refrigerant in the container member and sends it to the intake pipe for reducing an inside pressure of the container member. The pressure reduction device is in fluid communication with the intake pipe at a location between the outlet of the evaporator and an inlet of compression mechanism. A refrigerator includes the hermetic compressor.

Abstract: A capacity varying device for a scroll compressor is provided. The device may include a fixed scroll and an orbiting scroll both located in a casing, a low pressure passage formed by an orbiting motion of the orbiting scroll that communicates with a suction side, an intermediate pressure passage formed by the orbiting motion of the orbiting scroll that communicates with an intermediate pressure side, a rotating device rotatably coupled to the fixed scroll and having a connection passage therein, and an operating device mounted at the fixed scroll and configured to rotate the rotating device such that the low pressure passage and the intermediate pressure passage are connected/disconnected to/from each other via the connection passage of the rotating device. Accordingly, a capacity for compressing gas may be varied, a size of the device may be reduced due to a compact configuration and structure for varying the capacity, and also a fast response to the varying of the capacity may be provided.

Abstract: A compressor system includes a pair of compressors located in a common shell. A common drive shaft drives both compressors and the drive shaft is powered by a single motor. One or both of the compressors can be equipped with a pulse width modulated capacity control system and a vapor injection system. When one compressor is equipped with these systems, the capacity can be varied between 50% and 110%. When both compressors are equipped with these systems, the capacity can be varied between 0% and 120%.